Merge branch '3.4' into 4.4

* 3.4:
  Fix more quotes in exception messages
  [3.4] Minor fixes
  [PropertyAccess] Improved errors when reading uninitialized properties

Author: fabpot

InputStream.php

@@ -45,7 +45,7 @@ public function write($input)
             return;
         }
         if ($this->isClosed()) {
-            throw new RuntimeException(sprintf('%s is closed.', static::class));
+            throw new RuntimeException(sprintf('"%s" is closed.', static::class));
         }
         $this->input[] = ProcessUtils::validateInput(__METHOD__, $input);
     }

Pipes/AbstractPipes.php

@@ -103,7 +103,7 @@ protected function write(): ?array
             } elseif (!isset($this->inputBuffer[0])) {
                 if (!\is_string($input)) {
                     if (!is_scalar($input)) {
-                        throw new InvalidArgumentException(sprintf('%s yielded a value of type "%s", but only scalars and stream resources are supported.', \get_class($this->input), \gettype($input)));
+                        throw new InvalidArgumentException(sprintf('"%s" yielded a value of type "%s", but only scalars and stream resources are supported.', \get_class($this->input), \gettype($input)));
                     }
                     $input = (string) $input;
                 }

ProcessUtils.php

@@ -61,7 +61,7 @@ public static function validateInput($caller, $input)
                 return new \IteratorIterator($input);
             }
 
-            throw new InvalidArgumentException(sprintf('%s only accepts strings, Traversable objects or stream resources.', $caller));
+            throw new InvalidArgumentException(sprintf('"%s" only accepts strings, Traversable objects or stream resources.', $caller));
         }
 
         return $input;

Tests/ProcessTest.php

@@ -293,7 +293,7 @@ public function testSetInputWhileRunningThrowsAnException()
     public function testInvalidInput($value)
     {
         $this->expectException('Symfony\Component\Process\Exception\InvalidArgumentException');
-        $this->expectExceptionMessage('Symfony\Component\Process\Process::setInput only accepts strings, Traversable objects or stream resources.');
+        $this->expectExceptionMessage('"Symfony\Component\Process\Process::setInput" only accepts strings, Traversable objects or stream resources.');
         $process = $this->getProcess('foo');
         $process->setInput($value);
     }